package com.cjt.security;

import cn.hutool.json.JSONUtil;
import com.cjt.common.lang.R;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

@Component
public class LoginFailureHandler implements AuthenticationFailureHandler {
    @Override
    public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) throws IOException, ServletException {
        response.setContentType("application/json;charset=UTF-8");

        String msg =  exception.getMessage().equals("Bad credentials") ? "用户名或者密码错误":exception.getMessage() ;
        ServletOutputStream servletOutputStream = response.getOutputStream();
        R r = R.fail(HttpServletResponse.SC_FORBIDDEN,msg,null);
        servletOutputStream.write(JSONUtil.toJsonStr(r).getBytes(StandardCharsets.UTF_8));

        servletOutputStream.flush();
        servletOutputStream.close();
    }
}
